Paper-machine.



PATENTED APR. 26, 1904.

A. W. & L. W." CASE.

PAPER'MAGHINE. APPLICATION lILED 116.18, 190a.

a SHEETS-SHEET 1.

N0 MODEL.

I Hull,

THE upnms PUERS cc vno'rouwo, wash NGTON, u c,

PATENTED: APR. 26, 1904.

A. w a L W GASE 'PAPER MACHINE.

LPPLIQATION FILED AUG. 18, 1903.

H0 MODEL.

3 SHEETS-SHEET 2- m: Mamas mine 00., mum-Limo" wnmum'ou. u. c.

No. 758,127. V PATENTED APR. 26,'1904.

A. w. a; L. w. CASE.

PAPER MACHINE.

APPLIOATION FILED AUG.18, 1903.

30 MODEL. BSHEETS-SHIBET 3.

1! mm mm (:11 mumum. Wampum, 9.1:.

UNITED STATES Patented April 26, 1904.

PATENT OFFICE.

ALFRED W. CASE AND LAWRENCE W. CASE, OF HIGHLAND PARK, CONNECTICUT.

PAPER-MAGHINE.

SPECIFICATION forming part of Letters Patent No. 758,127, dated April26, 1904. i

w 1 Application filed August 18,1903.

To alt whom it may concern;

Be it known that we, ALFRED ll. Case an LAwRnNcn l/VCAsE, citizens ofthe United States, residing at Highland Park, in the county of Hartfordand State of Connecticut, have invented certain new and usefulImprovements in Paper-Machines, of which the following is aspecification.

This invention relates to a machine which [O is particularly adapted forworkinglong-fiber stock, heavy stock, and greasy stock.

The object is to provide a machine which will continuously produceuniform sheets of even thickness and compact texture from long,

heavy, or greasy stocksuch, for instance, as

is composed largely of leather fiber.

The stock in a pulpy condition is flowed onto an endless traveling apronabove a perforated forming-table and immediately subjected to thecompression of a rapidly-oscillated platen, which is so pivoted that theopening between the platen and the apron is wider where the pulppassesunder than where the pulp passes from under the platen. This 5platen rapidly pats down the pulp'and forms it into a uniformly evencontinuous web and .also felts the fibers so that they will be firmlymatted together. The free water drains through the perforations in thetable, and the 3 edges of the forming-frame above the table form thesides of the web. As the pulp travels with the lower apron it is carriedbeneath an upper apron and subjected between the two aprons to thecompression of the lower bed-rolls and the upper alternately-arrangedsqueeze-rolls and the lower bed-rolls and the alternately-arranged upperpress rolls, which are forced down by weighted levers, adjusted to bearheavier and heavier on 1 the pulp as it advances. After passing betweenthe apron feed-rolls the web is drawn between cutter-cylinders and cutinto sheets.

Figure 1 of the accompanying drawings shows a side elevation of one endof a machine 15 which embodies the invention. Fig. 2shows a sideelevation of the other end of the machine. Fig. 3 shows a side elevationof the cutter end of the machine with the drivinggears omitted. Fig. 4;shows a plan of the Serial. No. l69, 9 08. (Nu model.)

cutter end of the machine, and Fig. 5 shows a plan of the pulp-receivingend of the ma- I chine.

Fibrous pulp in a comparatively thick condition is allowed to flow fromthe spout 1 of the supply-pipe 2 when the valve 3is open onto theinclined trough 4 and down the inclined trough 5, that rests upon therear edge of the pulp-forming frame 6. The formingframe, which receivesthe pulp as it flows down, rests upon the perforated forming-table 7,which is supported by side bars 8, that are mounted on wedge-blocks 9.When the clamp-nuts 10 on bolts that extend from the side bars throughvertical slots 11 in the side frames 12 and the clamp-nuts 130m boltsthat extend through inclined slots 14 in the upper Wedge-blocks andthrough thever'tical slots in the side frames are loosened, the upperwedge-bl0cks may be moved one way or the other for raising or loweringthe formingtable to the desired height. ing-table has been adjusted theclamp-nuts are tightened to hold it in position.

Cleats 15 are fastened to the sides of the table so asto engage theprojecting ends of the back 16 of the frame and prevent it from beingcarried forward by the movement of the apron 17, which passes betweenthe frame and the table. The apronis preferably an endless strip of linemesh wire-cloth, but may be any other material having sufficientstrength and the requisite mesh.

The platen 18,which is movable up and down between the sides of theforming-frame, is fastened to bars 19, that are hinged to the sideframes 20. A shield 21 is attached to the back edge of the platen toprevent the pulp from flowing onto the top of the platen, and packings22 may be arranged on the shield to make tight joints between the endsof the shield and the sides of the frame.

After the formthe bars 19, attached to the top of the platen.

On an end of this shaft is a rocker-arm 26,

which is connected by a rod 27 with a crankpulley 28, mounted on. theside frame 20. This crank-pulley is adapted to be belted to any sourceof power, and when the crank is ro' tated the platen is oscillatedVertically between the sides of the forming-frame and above theperforated forming-table, the length of the oscillations beingdetermined by the adjustment of the crank on the pulley.

The lower apron 17 passes from the roll 29 at the end of the machineover aroll 30, mounted at one end of the forming-table, and between theperforated forming-table and the solid oscillatory platen and afterpassing over a roll 31, mounted at the other end of the forming-table,passes over bed-rolls 32. This apron is drawn over the bed-rolls by thelower feedroll 33 and passes down around an idler-roll 34, then over astretching-roll 35, the shaft of which is held in bearings mounted uponscrew-threaded spindles 36. From the stretching-roll the lower apronpasses beneath an idler-roll 37, over a guiding-roll 38, and afterpassing'around an idler-roll 39 travels back to the roll 29. Theguiding-roll 38 is arranged 'With a screw-adjustment 40, whereby it maybe adjusted to'cause this apron to run straight.

Near the guiding-roll is a perforated pipe .41, which is adapted to beconnected with a water-supply. By means of this jets of water may besprayed upon the lower apron for washing out matter that has becomeembedded in its meshes. Beneath the sprayer is a tray 42 for catchingthe water that is used for washing this apron.

Supported by standards so'as to rest upon the aprons between the firstof the bed-rolls are squeeze-rolls 43, and bearing down upon the apronsbetween the last of the bed-rolls are press-rolls 44. Levers 45',pivoted to stand ards and provided with weights 46, are arranged toforce down the shafts of the pressrolls, the weights being preferably soarranged as to increase the pressure upon the aprons.

toward the feed-rolls.

The upper apron 47 passes around an idlerroll 48, supported by bearingsat the top of the frames 20, and then passes below the squeeze-rolls andthe press-rolls to the upper feed-roll 49. After passing around thisfeedroll this apronpasses under a tightening-roll 50, the bearings ofwhich are supported in a common manner upon vertical screw-threadedspindles 51, and then.passes over a guide-roll 52. Near this guide-rollis a perforated pipe 53, that is adapted to be connected withawater-supply, whereby the upper apron may be washed and pulp loosenedfrom its meshes. A tray 54 is located beneath this sprayer to catch thewater. From the guide-roll this apron travels back to the idler-roll 48.

The pulp is first compacted by the oscillations of the platen and thefree water drained out through the perforated forming-table. Theexpression of water and the compacting of the web is continued by thesqueezing together of the upper and lower aprons as they driving-pulley63.

.ing the stock or separating the fibers.

pass over the bed-rolls and under the squeezerolls. The pressing iscontinued to a greater degree by the pressing together of the aprons asthey pass over the bed-rolls and under the weighted press-rolls, and thepressing is concluded by the squeeze given as the aprons pass betweenthe feed-rolls.

The shaft of the lower feed-roll is held in bearings attached to sideframes 55, while the shaft of the upper feed-roll is held by bearingsthat are forced down by levers 56, pivoted to the side frames andprovided with weights 57. The pivotal supports of these levers thatpress down the upper feed-rolls are adjustable by hand-wheels 58,attached to threaded spindles that turn in the upper ends of.the sideframes.

The shafts of the feed-rolls have intermeshing gears 59, and the lower,shaft is also provided with a worm-wheel 60,-meshing with which is aworm 61 on a shaft 62, that has a By these mechanisms the feed-rolls arerotated, so as to draw between them the aprons and the pulp.

To assist the feed-rolls in moving the aprons, the shafts of several ofthe bed-rolls are provided with worm-wheels 64, meshing with which areworms 65 on a shaft 66, that has a driving-pulley 67.

The compacted web of pulp is carried from the feed-rolls over asupporting-roll 68 to cutter-rolls 69, the upper of which has blades 70,and the lower has blade-beds 71. The shafts of the cutter-rolls aresupported in bearings fastened to the side frames 72 and are providedwith intermeshing gears 73. The lower shaft also has a worm-wheel 74,meshing with which is a worm 75 on the shaft 62.- Two sheets ofcompressed pulp are severed at each revolution of the cutter-cylinder.

When the rolls are placed alternately instead of one above the other,the water is pressed out more thoroughly without crush- The weightedpress-rolls depress the aprons, with the intermediate pulp, between thebed-rolls, so that the aprons and pulp are first strained downwardlyover a bed-roll, then upwardly under a press roll, and as the press rollweights are preferably arranged to bear down heavier and heavier as theaprons and pulp pass toward the feed-rolls the straining is greater andthe pulp compacted more densely until it receives its final pressurewhen passing between the feed-rolls.

The invention claimed is- 1. Apaper-machine having traveling aprons,feed-rolls for moving the aprons, bed-roll for supporting the aprons,squeeze-rolls bearing down upon the aprons between bed-rolls, pressrollsbearing down upon the aprons between bed-rolls, and weighted levers forforcing down the press-rolls, substantially as specified.

. 2. A paper-machine having traveling aprons, feed-rolls for moving theaprons, bed-rolls for IIO supporting the aprons, squeeze-rolls bearingdown upon the aprons between bedrolls,press rolls bearing down upon theaprons between bed-rolls, levers for forcing down the pressrolls, andweights arranged to increase the force of the levers toward thefeed-rolls, substantially as specified.

3. A paper-machine having a perforated forming-table, an oscillatingplaten above the forming-table, traveling aprons, feed-rolls for movingthe aprons, bed-rolls for supporting the aprons, squeeze-rolls bearingdown upon the aprons between bed-rolls, press-rolls hearing down uponthe aprons between bed-rolls, and Weighted levers for forcing down thepress-rolls, substantially as specified.

4. A paper-machine having a perforated forming-table, a forming-frameloosely resting' upon the forming-table, an oscillating platen locatedin the frame and above the forming-table. traveling aprons, one of whichpasses between the platen and the formingtable, feed-rolls for movingthe aprons, bedrolls for supporting the aprons, squeeze-rolls bearingdown upon the aprons between bedrolls, press rolls bearing down upon theaprons between bed-rolls, and weighted levers for forcing down thepress-rolls, substantially as specified.

5. A paper-machine having a perforated forming-table, adjustable wedgessupporting the forming-table, an oscillating platen above theforming-table, traveling aprons one of which passes between the platenand the forming-table, feed-rolls for moving the aprons, bed-rolls forsupporting the aprons, squeezerolls bearing down upon the aprons betweenbed-rolls, press-rolls bearing down upon the aprons between bed-rolls,and weighted levers for forcing down the press-rolls, substantially asspecified.

6. A paper-machine having a perforated forming-table, a forming-frameresting upon the table, an oscillating platen above the table, travelingaprons, one of which passes between the platen and the forming-table,feedrolls for moving the aprons, and bed-rolls for sugporting theaprons, substantially as specifie 7 A paper-machine having a perforatedforming-table, a forming-frame resting upon the forming-table, means foradjusting the height of the forming-table, an endless apron travelingover the formingtable, a platen movable above the forming-table in theforming-frarne, bars hinging the platen to a supporting-frame, arocker-shaft with rockerarms connected with the platen and a rockerarmconnected with a crank, feed-rolls for moving the apron, and bed-rollsfor supporting the apron, substantially as specified.

' 8. Apaper-machine havingtraveling aprons, feed-rolls for moving theaprons, bed-rolls for supporting the-aprons, squeeze-rolls bearing downupon the aprons between bed-rolls, pressrolls bearing down upon theaprons between bed-rolls, weighted levers for forcing down thepress-rolls, and cutter-cylinders, one of which has a cutting-blade andthe other a cutting-bed, substantially as specified.

ALFRED W. CASE. LAWRENCE WV. CASE.

